95 db is pretty efficient. Most music does not have content that goes lower than 40 hz so you are probably fine with the power you have for music. HT is another matter. There is usually some content in movies which goes down into the 15-20 hz range which requires a lot more power to move the amount of air. Bear in mind that in doubling the power to a speaker increases output SPL 3 db. Your speakers are capable of 95 db spl at 1 watt. At 60 watts they would be at about 112 db (log2 60 times 3db plus 95db) which is pretty loud. At 200 watts input you would have about 117 db spl. Also bear in mind that these numbers are all lab/ideal numbers and depending on your room you may not get to these levels but it is all scalable to your room. Most of us want big clean sound and in order to get it at the lower HZ we use a subwoofer powered by a separate amp. It provides plenty of LFE and relieves the main amps and speakers from having to supply the power which gives more available power to the mains. IMHO if you are running a receiver with 60 watts per channel and you are using a powered sub with your mains 95 db efficient you have plenty of power.